B-20 cannon by M.E.Berezin

C
annon that replaced ShVAK in the very last months of the Great Patriotic War. With similar general performance, it was twice lighter, much simpler and more reliable. It utilizes energy of gases for reloading.
B-20 was built in synchronized, wing-mounted and turret-mounted versions. After the WWII was used in PV-20 defensive system of heavy bombers, including four turrets.
References:
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.451;
    		• Technical data
    Year 1945
    Caliber 20mm
    Projectile Weight96gr
    Muzzle Speed 800m/s
    Fire Rate 800 rps
    Cannon Weight 25kg
    Modified October 14, 1997
    by Alexandre Savine;    		 Back to
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